The pronunciation of Danzhou in Hainan was dānzhōu.
The correct pronunciation of Danzhou in Hainan was dānzhōu.
The correct pronunciation of Danzhou in Hainan was dānzhāu, not zhan.
Danzhou was a prefecture-level city under the jurisdiction of Hainan Province, located in the northwest of Hainan Island. Danzhou was described as the regional central city of Hainan Province. It had the largest land area and the longest coastline in Hainan Province. Therefore, it could be concluded that Danzhou was indeed located in Hainan.
The Danzhou in Joy of Life did not refer to Danzhou in Hainan. Danzhou in Joy of Life referred to Danzhou in Jiangsu and Zhejiang, not Danzhou in Hainan. Therefore, the Danzhou in Joy of Life was not Danzhou in Hainan.